CN103792047A - High-precision gas leakage detection device and method - Google Patents
High-precision gas leakage detection device and method Download PDFInfo
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- CN103792047A CN103792047A CN201210429476.8A CN201210429476A CN103792047A CN 103792047 A CN103792047 A CN 103792047A CN 201210429476 A CN201210429476 A CN 201210429476A CN 103792047 A CN103792047 A CN 103792047A
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Abstract
The invention discloses a high-precision gas leakage detection device and method. The high-precision gas leakage detection device comprises a mixture gas source container, wherein the mixture gas source container is used for holding a leakage detection gas and a leakage detection substance; a detection tube, wherein the first end of the detection tube is connected with the mixture gas source container and the second end of the detection tube is suitable to be connected with a member to be detected, at least one of the mixture gas source container and the detection tube being provided with an inlet valve; an exhaust pipe, wherein the first end of the exhaust pipe is connected with the detection tube and the first end of the exhaust pipe is arranged between the inlet valve and the second end of the detection tube, and the exhaust pipe is provided with an outlet valve; an air-pressure detection member, wherein the air-pressure detection member is connected with the portion, arranged between the inlet valve and the second end of the detection tube, of the detection tube; and a leakage detector, wherein the leakage detector is suitable to close to the member to be detected for detecting the leakage detection substance. The high-precision gas leakage detection device in the invention has the advantages of being high in detection precision, simple in structure and convenient to operate, and being capable of detecting leakage points and the like.
Description
Technical field
The present invention relates to leak hunting technology field, in particular to a kind of high-precision gas leakage detection apparatus and gases at high pressure element leak hunting method.
Background technology
The products such as water dispenser, air-conditioning, refrigerator need to seal leak detection before dispatching from the factory.In order to solve the problems such as conventional high-tension gas inspection false drop rate is high, technological process is many, some equipment adopt the method for gas inspection and brush foam to judge whether product leaks to product, but accuracy of detection is lower and can not detect leakage point.Also have some equipment to merge multiple leak hunting method in order to improve precision, but the structure of equipment is too complicated, operation is very loaded down with trivial details.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, one object of the present invention be to propose a kind of accuracy of detection high, can detect leakage point, simple in structure, easy to operate high-precision gas leakage detection apparatus.
Another object of the present invention is to propose a kind of gases at high pressure element leak hunting method.
For achieving the above object, embodiment according to a first aspect of the invention proposes a kind of high-precision gas leakage detection apparatus, and described high-precision gas leakage detection apparatus comprises: combination gas source container, and described combination gas source container is used for holding search gas and leak detection material; Detector tube, the first end of described detector tube is connected with described combination gas source container and the second end of described detector tube is suitable for being connected with to be checked, and at least one in described combination gas source container and described detector tube is provided with gas admittance valve; Gas outlet, the first end of described gas outlet be connected with described detector tube and the first end of described gas outlet between the second end of described gas admittance valve and described detector tube, described gas outlet is provided with vent valve; Air pressure detection piece, described air pressure detection piece is connected with the part between the second end of described gas admittance valve and described detector tube of described detector tube; And sniffer, described sniffer be suitable for contiguous described to be checked for detection of described leak detection material.
Adopt gas procuratorial organ formula to hunt leak to described to be checked according to the high-precision gas leakage detection apparatus of the embodiment of the present invention, avoided the various inconvenience in traditional water inspection equipment.And described high-precision gas leakage detection apparatus is provided with described sniffer and for holding the described combination gas source container of described search gas and described leak detection material, thereby can utilize described sniffer to carry out determining of more high-precision leak detection and leakage point to described to be checked.And the structure of described high-precision gas leakage detection apparatus is very simple, the operation of utilizing described high-precision gas leakage detection apparatus to hunt leak is less, processing ease.Therefore, according to the high-precision gas leakage detection apparatus of the embodiment of the present invention have accuracy of detection high, can detect leakage point, the advantage such as simple in structure, easy to operate.
In addition, high-precision gas leakage detection apparatus according to the above embodiment of the present invention can also have following additional technical characterictic:
According to one embodiment of present invention, described combination gas source container comprises: search gas container, and described search gas container is used for holding described search gas; Leak detection material container, described leak detection material container is used for holding described leak detection material; And mixer, described mixer is connected with the first end of described search gas container, described leak detection material container and described detector tube respectively.Described search gas and described leak detection material separately can be stored like this.
According to one embodiment of present invention, in described mixer, there is hybrid chamber and described hybrid chamber has the first import, the second import and outlet, wherein said the first import is connected with described search gas container by the first draft tube, described the second import is connected with described leak detection material container by the second draft tube, and described outlet is connected with the first end of described detector tube.Can realize thus in the time that described to be checked is hunted leak, described leak detection material in described search gas in described search gas container and described leak detection material container enters described detector tube after mixing in described mixer, and described mixer has advantages of simple structure and simple.
According to one embodiment of present invention, described mixer is tee pipe fitting, the first arm of described tee pipe fitting is connected with described search gas container, the second arm of described tee pipe fitting is connected with described leak detection material container, and the 3rd arm of described tee pipe fitting is connected with the first end of described detector tube.Can realize in another way thus in the time that described to be checked is hunted leak, the described leak detection material in the described search gas in described search gas container and described leak detection material container enters described detector tube after mixing in described mixer.
According to one embodiment of present invention, described gas admittance valve comprises search gas valve and leak detection material valve, and described search gas valve is located on described the first draft tube or described the first arm, and described leak detection material valve is located on described the second draft tube or described the second arm.Can utilize like this break-make of the first draft tube described in the control of described search gas valve or described the first arm to allow or to hinder described search gas by described the first draft tube or described the first arm, and can utilize the break-make of the second draft tube described in the control of described leak detection material valve or described the second arm to allow or to hinder described leak detection material and pass through described the second arm.
According to one embodiment of present invention, described gas admittance valve comprises search gas valve, leak detection material valve and mixes air valve, described search gas valve is located on described the first draft tube or described the first arm, described leak detection material valve is located on described the second draft tube or described the second arm, and described mixing air valve is located on described detector tube.The break-make that so not only can utilize the first draft tube described in the control of described search gas valve or described the first arm with allow or hinder described search gas by described the first draft tube or described the first arm and utilize the second draft tube described in the control of described leak detection material valve or the break-make of described the second arm to allow or to hinder described leak detection material by affiliated the second draft tube or described the second arm, and the break-make that can utilize detector tube described in described mixing Air Valve Control is passed through described detector tube with the combination gas allowing or hinder described search gas and described leak detection material.
According to one embodiment of present invention, described the second arm is provided with retaining valve.Can make thus the performance of described high-precision gas leakage detection apparatus more stable.
According to one embodiment of present invention, described tee pipe fitting also comprises Venturi tube, the first end of described Venturi tube is connected with described the first arm and the second end of described Venturi tube is connected with described the 3rd arm, and described the second arm is connected with the throat of described Venturi tube.Thus can be cost-saving.
According to one embodiment of present invention, described air pressure detection piece comprises: pressure transducer, and described pressure transducer is located on described detector tube and between the second end of described gas admittance valve and described detector tube; With air pressure leak detection unit, described air pressure leak detection unit is connected and analyzes for the detection signal to described pressure transducer with described pressure transducer.Can realize thus the measuring ability of described air pressure detection piece to described detector tube internal pressure, and operating personnel can observe testing result by described pressure transducer.
According to one embodiment of present invention, described leak detection material is halogen gas or helium.Can further improve like this accuracy of detection of described high-precision gas leakage detection apparatus.
Embodiment according to a second aspect of the invention proposes the method that the high-precision gas leakage detection apparatus described in a kind of utilization embodiment is according to a first aspect of the invention hunted leak, described method comprises: A) by to be checked the second end that is connected to described detector tube, then open described gas admittance valve and close described vent valve so that by described in the search gas in described combination gas source container and leak detection material inputs to be checked; And B) close described gas admittance valve, utilize described air pressure detection piece to detect the pressure of described detector tube, if the pressure of described detector tube changes, described to be checked there is leakage point, if the pressure of described detector tube is constant, utilize described sniffer to hunt leak to described to be checked.
The method of hunting leak according to the high-precision gas leakage detection apparatus described in the utilization of embodiment of the present invention embodiment according to a first aspect of the invention adopts the mode of gas inspection to hunt leak to described to be checked, has avoided the various inconvenience in traditional water detecting method.And described leak hunting method is inputted the combination gas of described search gas and described leak detection material to described parts to be checked, thereby can carry out after air pressure detection described parts to be checked, can also utilize described sniffer to carry out accurate detection and definite leak position more to described parts to be checked.Therefore, according to the gases at high pressure element leak hunting method of the embodiment of the present invention have accuracy of detection high, can detect leak position, implement difficulty low, simple operation and other advantages.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the structural representation of the high-precision gas leakage detection apparatus of the embodiment of the present invention;
Fig. 2 is according to the structural representation of the mixer of the high-precision gas leakage detection apparatus of the embodiment of the present invention;
Fig. 3 is the structural representation of the mixer of high-precision gas leakage detection apparatus in accordance with another embodiment of the present invention; With
Fig. 4 is the structural representation of high-precision gas leakage detection apparatus in accordance with another embodiment of the present invention.With
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, except as otherwise noted, the implication of " multiple " is two or more, unless separately there is clear and definite restriction.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
Describe according to the high-precision gas leakage detection apparatus 1 of the embodiment of the present invention below with reference to Fig. 1-Fig. 4.As Figure 1-Figure 4, comprise combination gas source container 100, detector tube 200, gas outlet 300, air pressure detection piece 400 and sniffer 500 according to the high-precision gas leakage detection apparatus 1 of the embodiment of the present invention.
Combination gas source container 100 is for holding search gas and leak detection material.The first end 210 of detector tube 200 is connected with combination gas source container 100 and the second end 220 of detector tube 200 is suitable for being connected with to be checked, at least one in combination gas source container 100 and detector tube 200 is provided with described gas admittance valve (not shown, after will be described in detail described gas admittance valve).The first end 310 of gas outlet 300 be connected with detector tube 200 and the first end 310 of gas outlet 300 between the second end 220 of described gas admittance valve and detector tube 200, gas outlet 300 is provided with vent valve 330.In other words, the first end 310 of gas outlet 300 is connected with the part between the second end 220 of described gas admittance valve and detector tube 200 of detector tube 200.Air pressure detection piece 400 is connected with the part between the second end 220 of described gas admittance valve and detector tube 200 of detector tube 200.That is to say, air pressure detection piece 400 be connected with detector tube 200 and air pressure detection piece 400 between the second end 220 of described gas admittance valve and detector tube 200.Sniffer 500 be suitable for contiguous described to be checked for detection of described leak detection material.
The following describes according to the course of work of the high-precision gas leakage detection apparatus 1 of the embodiment of the present invention.To be checked is tightly connected with the second end 220 of detector tube 200, open described gas admittance valve and close vent valve 330, the described search gas in combination gas source container 100 and described leak detection material enter detector tube 200 and enter described to be checked by the second end 220 of detector tube 200.Close described gas admittance valve, the pressure that utilizes air pressure detection piece 400 to detect in detector tube 200 changes, because detector tube 200 is connected with described to be checked sealing, the pressure of therefore closing in the rear detector tube 200 of described gas admittance valve and vent valve 330 equals the pressure in described to be checked.Observe the pressure variation that air pressure detection piece 400 shows, in the time of pressure significant change in detector tube 200, judge that described to be checked exists and leak, when detector tube 200 internal pressures are during without significant change, by sniffer 500 press close to described to be checked so that described to be checked is hunted leak, thereby further judge whether described to be checked exist trickle leakage.In the time that sniffer 500 detects described leak detection material, sniffer 500 exists and leaks described to be checked the position of detecting, and in the time that sniffer 500 can not detect described leak detection material, sniffer 500 does not exist leakage to described to be checked the position of detecting.
Adopt gas procuratorial organ formula to hunt leak to described to be checked according to the high-precision gas leakage detection apparatus 1 of the embodiment of the present invention, avoided the various inconvenience in traditional water inspection equipment.And high-precision gas leakage detection apparatus 1 is provided with sniffer 500 and for holding the combination gas source container 100 of described search gas and described leak detection material, thereby can utilize sniffer 500 to carry out determining of more high-precision leak detection and leakage point to described to be checked.And the structure of high-precision gas leakage detection apparatus 1 is very simple, the operation of utilizing high-precision gas leakage detection apparatus 1 to hunt leak is less, processing ease.Therefore, according to the high-precision gas leakage detection apparatus 1 of the embodiment of the present invention have accuracy of detection high, can detect leakage point, the advantage such as simple in structure, easy to operate.
Fig. 1 and Fig. 4 show the high-precision gas leakage detection apparatus 1 of a specific embodiment according to the present invention.As shown in Figure 1 and Figure 4, combination gas source container 100 can comprise search gas container 110, leak detection material container 120 and mixer 600.Search gas container 110 can be for holding described search gas.Leak detection material container 120 can be for holding described leak detection material.Mixer 600 can be connected with the first end 210 of search gas container 110, leak detection material container 120 and detector tube 200 respectively.Described search gas can be stored in search gas container 110 like this, and described leak detection material is stored in leak detection material container 120, in the time that described to be checked is hunted leak, described search gas and described leak detection material enter detector tube 200 after the interior mixing of mixer 600.That is to say, by search gas container 110, leak detection material container 120 and mixer 600 are set, described search gas and described leak detection material separately can be stored.
Particularly, mixer 600 is interior can have hybrid chamber 610 and hybrid chamber 610 can have the first import 611, the second import 612 and outlet 613, wherein the first import 611 can be connected with search gas container 110 by the first draft tube 700, the second import 612 can be connected with leak detection material container 120 by the second draft tube 800, and outlet 613 can be connected with the first end of detector tube 200 210.Described search gas in search gas container 110 can enter hybrid chamber 610 by the first draft tube 700 and the first import 611 successively, described leak detection material in leak detection material container 120 can enter hybrid chamber 610 by the second draft tube 800 and the second import 612 successively, and described search gas and described leak detection material can enter detector tube 200 by exporting 613 after the interior mixing of hybrid chamber 610.Can realize thus in the time that described to be checked is hunted leak, described leak detection material in described search gas in search gas container 110 and leak detection material container 120 enters detector tube 200 after the interior mixing of mixer 600, and mixer 600 has advantages of simple structure and simple.
Needing to understand ground is that the first draft tube 700 and the second draft tube 800 are a part for combination gas source container 100.
Advantageously, as shown in Figure 4, described gas admittance valve can comprise search gas valve 710 and leak detection material valve 810, and search gas valve 710 can be located in the first draft tube 700, and leak detection material valve 810 is located in the second draft tube 800.By search gas valve 710 being set in the first draft tube 700 and leak detection material valve 810 being set in the second draft tube 800, can utilize break-make that search gas valve 710 controls the first draft tube 700 to allow or to hinder described search gas by the first draft tube 700, and can utilize break-make that leak detection material valve 810 controls the second draft tube 800 to allow or to hinder described leak detection material by the second draft tube 800.
More advantageously, as shown in Figure 1, described gas admittance valve can comprise search gas valve 710, leak detection material valve 810 and mix air valve 230, search gas valve 710 can be located in the first draft tube 700, leak detection material valve 810 can be located in the second draft tube 800, mixes air valve 230 and can be located on detector tube 200.So not only can utilize break-make that search gas valve 710 controls the first draft tube 700 to allow or to hinder described search gas by the first draft tube 700 and utilize break-make that leak detection material valve 810 controls the second draft tube 800 to allow or to hinder described leak detection material by the second draft tube 800, and can utilize mix break-make that air valve 230 controls detector tube 200 with the combination gas that allows or hinder described search gas and described leak detection material by detector tube 200.
Described gas admittance valve also can only include one and be located at mixing air valve 230 on detector tube 200 to control the break-make of detector tube 200, thus allow or the combination gas that hinders described search gas and described leak detection material by detector tube 200.
Fig. 2 and Fig. 3 show high-precision gas leakage detection apparatus 1 according to an embodiment of the invention.As shown in Figures 2 and 3, mixer 600 can be tee pipe fitting, the first arm 620 of described tee pipe fitting can be connected with search gas container 110, the second arm 630 of described tee pipe fitting can be connected with leak detection material container 120, and the 3rd arm 640 of described tee pipe fitting can be connected with the first end of detector tube 200 210.Described search gas in search gas container 110 can enter the 3rd arm 640 by the first arm 620, described leak detection material in leak detection material container 120 can enter the 3rd arm 640 by the second arm 630, and described search gas and described leak detection material enter detector tube 200 after the interior mixing of the 3rd arm 640.Can realize in another way thus in the time that described to be checked is hunted leak, the described leak detection material in the described search gas in search gas container 110 and leak detection material container 120 enters detector tube 200 after the interior mixing of mixer 600.
Advantageously, described gas admittance valve can comprise search gas valve 710 and leak detection material valve 810, and search gas valve 710 can be located on the first arm 620, and leak detection material valve 810 can be located on the second arm 630.By search gas valve 710 being set on the first arm 620 and leak detection material valve 810 being set on the second arm 630, can utilize break-make that search gas valve 710 controls the first arm 620 to allow or to hinder described search gas by the first arm 620, and can utilize break-make that leak detection material valve 810 controls the second arm 630 to allow or to hinder described leak detection material by the second arm 630.
More advantageously, described gas admittance valve can comprise search gas valve 710, leak detection material valve 810 and mix air valve 230, search gas valve 710 can be located on the first arm 620, and leak detection material valve 810 can be located on the second arm 630, mixes air valve 230 and is located on detector tube 200.So not only can utilize break-make that search gas valve 710 controls the first arm 620 to allow or to hinder described search gas by the first arm 620 and utilize break-make that leak detection material valve 810 controls the second arm 630 to allow or to hinder described leak detection material by the second arm 630, and can utilize mix break-make that air valve 230 controls detector tube 200 with the combination gas that allows or hinder described search gas and described leak detection material by detector tube 200.
Described gas admittance valve also can only include one and be located at mixing air valve 230 on detector tube 200 to control the break-make of detector tube 200, thereby the combination gas that can allow or hinder described search gas and described leak detection material is by detector tube 200.
As shown in Figure 2, on the second arm 630, can be provided with retaining valve 631.Because the pressure of the described search gas in search gas container 110 is higher than the pressure of the described leak detection material in leak detection material container 120, can prevent that by retaining valve 631 is set on the second arm 630 described search gas from entering leak detection material container 120 by the second arm 630, thereby can make the performance of high-precision gas leakage detection apparatus 1 more stable.
Alternatively, as shown in Figure 3, described tee pipe fitting can also comprise Venturi tube 650, the first end 651 of Venturi tube 650 can be connected with the first arm 620 and the second end 652 of Venturi tube 650 can be connected with the 3rd arm 640, and the second arm 630 can be connected with the throat of Venturi tube 650.Wherein the throat of Venturi tube 650 refers to the most carefully locating of Venturi tube 650, namely the low pressure place of Venturi tube 650.By being set, Venturi tube 650 can play the effect of decompression of damming to the described search gas in the first arm 620, thus can be cost-saving.
Advantageously, the part of the contiguous Venturi tube 650 of the second arm 630 can be round table-like, and the xsect of the described part of the second arm 630 can reduce towards the direction of contiguous Venturi tube 650.That is to say, the xsect of the described round table-like part of the second arm 630 is reduced gradually by material container 120 to the Venturi tube 650 of hunting leak.Can play the effect of decompression of damming to the described leak detection material in the second arm 630 thus, thus can be further cost-saving.
Fig. 1 and Fig. 4 show the high-precision gas leakage detection apparatus 1 of an example according to the present invention.As shown in Figure 1 and Figure 4, air pressure detection piece 400 can comprise pressure transducer 410 and air pressure leak detection unit 420.Pressure transducer 410 can be located on detector tube 200 and pressure transducer 410 can be between the second end 220 of described gas admittance valve and detector tube 200.That is to say, pressure transducer 410 can be connected with the part between the second end 220 of described gas admittance valve and detector tube 200 of detector tube 200.Air pressure leak detection unit 420 can be connected for the detection signal of pressure transducer 410 is analyzed with pressure transducer 410.While utilizing high-precision gas leakage detection apparatus 1 to hunt leak to described to be checked, pressure transducer 410 detects the pressure in detector tube 200 and described detection signal is transferred to air pressure leak detection unit 420, and air pressure leak detection unit 420 carries out after analytical calculation, result being presented on pressure transducer 410 to described detection signal.Can realize thus the measuring ability of air pressure detection piece 400 to detector tube 200 internal pressures, and operating personnel can observe testing result by pressure transducer 410.
Alternatively, described leak detection material can be halogen gas or helium.Correspondingly, sniffer 500 can be halogen leak detector or helium leak check instrument.Can further improve thus the accuracy of detection of high-precision gas leakage detection apparatus 1.Wherein, described halogen can be with storage in liquid in leak detection material container 120, and described halogen also can be stored in leak detection material container 120 with compressed gaseous.
The method of hunting leak according to utilizing of embodiment of the present invention high-precision gas leakage detection apparatus 1 according to the above embodiment of the present invention is described below, and described method comprises:
A), by to be checked the second end 220 that is connected to detector tube 200, then open described gas admittance valve and close vent valve 330 so that by described in the search gas in combination gas source container 100 and leak detection material inputs to be checked; With
B) close described gas admittance valve, utilize air pressure detection piece 400 to detect the pressure of detector tube 200.Because detector tube 200 is connected with described to be checked sealing, the pressure of therefore closing in the rear detector tube 200 of described gas admittance valve and vent valve 330 equals the pressure in described to be checked.If the pressure of detector tube 200 changes, described to be checked there is leakage point, if the pressure of detector tube 200 is constant, utilizes sniffer 500 to hunt leak to described to be checked.
Adopt the mode of gas inspection to hunt leak to described to be checked according to the method that high-precision gas leakage detection apparatus 1 is hunted leak of utilizing of the embodiment of the present invention, avoided the various inconvenience in traditional water detecting method.And described leak hunting method is inputted the combination gas of described search gas and described leak detection material to described parts to be checked, thereby can carry out after air pressure detection described parts to be checked, can also utilize sniffer 500 to carry out accurate detection and definite leak position more to described parts to be checked.Therefore, according to the gases at high pressure element leak hunting method of the embodiment of the present invention have accuracy of detection high, can detect leak position, implement difficulty low, simple operation and other advantages.
According to the high-precision gas leakage detection apparatus 1 of the embodiment of the present invention have accuracy of detection high, can detect leak position, the advantage such as simple in structure, easy to operate.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.
Claims (11)
1. a high-precision gas leakage detection apparatus, is characterized in that, comprising:
Combination gas source container, described combination gas source container is used for holding search gas and leak detection material;
Detector tube, the first end of described detector tube is connected with described combination gas source container and the second end of described detector tube is suitable for being connected with to be checked, and at least one in described combination gas source container and described detector tube is provided with gas admittance valve;
Gas outlet, the first end of described gas outlet be connected with described detector tube and the first end of described gas outlet between the second end of described gas admittance valve and described detector tube, described gas outlet is provided with vent valve;
Air pressure detection piece, described air pressure detection piece is connected with the part between the second end of described gas admittance valve and described detector tube of described detector tube; With
Sniffer, described sniffer be suitable for contiguous described to be checked for detection of described leak detection material.
2. high-precision gas leakage detection apparatus according to claim 1, is characterized in that, described combination gas source container comprises:
Search gas container, described search gas container is used for holding described search gas;
Leak detection material container, described leak detection material container is used for holding described leak detection material; With
Mixer, described mixer is connected with the first end of described search gas container, described leak detection material container and described detector tube respectively.
3. high-precision gas leakage detection apparatus according to claim 2, it is characterized in that, in described mixer, there is hybrid chamber and described hybrid chamber has the first import, the second import and outlet, wherein said the first import is connected with described search gas container by the first draft tube, described the second import is connected with described leak detection material container by the second draft tube, and described outlet is connected with the first end of described detector tube.
4. high-precision gas leakage detection apparatus according to claim 2, it is characterized in that, described mixer is tee pipe fitting, the first arm of described tee pipe fitting is connected with described search gas container, the second arm of described tee pipe fitting is connected with described leak detection material container, and the 3rd arm of described tee pipe fitting is connected with the first end of described detector tube.
5. according to the high-precision gas leakage detection apparatus described in claim 3,4, it is characterized in that, described gas admittance valve comprises search gas valve and leak detection material valve, described search gas valve is located on described the first draft tube or described the first arm, and described leak detection material valve is located on described the second draft tube or described the second arm.
6. according to the high-precision gas leakage detection apparatus described in claim 3,4, it is characterized in that, described gas admittance valve comprises search gas valve, leak detection material valve and mixes air valve, described search gas valve is located on described the first draft tube or described the first arm, described leak detection material valve is located on described the second draft tube or described the second arm, and described mixing air valve is located on described detector tube.
7. high-precision gas leakage detection apparatus according to claim 4, is characterized in that, described the second arm is provided with retaining valve.
8. high-precision gas leakage detection apparatus according to claim 4, it is characterized in that, described tee pipe fitting also comprises Venturi tube, the first end of described Venturi tube is connected with described the first arm and the second end of described Venturi tube is connected with described the 3rd arm, and described the second arm is connected with the throat of described Venturi tube.
9. high-precision gas leakage detection apparatus according to claim 1, is characterized in that, described air pressure detection piece comprises:
Pressure transducer, described pressure transducer is located on described detector tube and between the second end of described gas admittance valve and described detector tube; With
Air pressure leak detection unit, described air pressure leak detection unit is connected and analyzes for the detection signal to described pressure transducer with described pressure transducer.
10. according to the high-precision gas leakage detection apparatus described in any one in claim 1-9, it is characterized in that, described leak detection material is halogen gas or helium.
11. 1 kinds of methods that utilization is hunted leak according to the high-precision gas leakage detection apparatus described in any one in claim 1-10, is characterized in that, comprising:
A), by to be checked the second end that is connected to described detector tube, then open described gas admittance valve and close described vent valve so that by described in the search gas in described combination gas source container and leak detection material inputs to be checked; With
B) close described gas admittance valve, utilize described air pressure detection piece to detect the pressure of described detector tube, if the pressure of described detector tube changes, described to be checked there is leakage point, if the pressure of described detector tube is constant, utilize described sniffer to hunt leak to described to be checked.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210429476.8A CN103792047A (en) | 2012-10-31 | 2012-10-31 | High-precision gas leakage detection device and method |
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| CN108896251A (en) * | 2018-05-15 | 2018-11-27 | 安徽万朗磁塑股份有限公司 | A kind of refrigerator door seal air-tightness detection device and method |
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